1.1 本试验方法涵盖聚乙烯、聚丙烯和聚丁烯塑料中炭黑含量的测定。不建议将其用于可能影响精度的丙烯酸或其他极性单体改性。样品在氮气下热解后，通过重量法测定炭黑含量。本试验方法不适用于含有除炭黑以外的非挥发性颜料或填料的组合物。 1. 1.1 本试验方法不适用于最终含有溴化阻燃添加剂的材料。 1.2 以国际单位制表示的数值应视为标准值。括号中的值仅供参考。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 注1: 本标准和ISO 6964-1986（E）涉及相同的主题，但技术内容不同。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 4.1 本试验方法提供的信息有助于制造质量控制、技术服务和研究目的； 并且是各种材料规范和光吸收率计算的要求。 4.2 试验方法 D4218 如果需要，可用于测定聚乙烯化合物的炭黑含量。

1.1 This test method covers the determination of the carbon black content in polyethylene, polypropylene, and polybutylene plastics. Its use with acrylic or other polar monomer modifications which might affect the accuracy is not recommended. Determinations of carbon black content are made gravimetrically after pyrolysis of the sample under nitrogen. This test method is not applicable to compositions that contain nonvolatile pigments or fillers other than carbon black. 1.1.1 This test method is not applicable to materials containing brominated flame retardant additives at the end. 1.2 The values stated in SI units are to be regarded as standard. The values in parentheses are given for information only. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Note 1: This standard and ISO 6964-1986(E) address the same subject matter, but differ in technical content. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 4.1 The information provided by this test method is useful for manufacturing quality control, technical service, and research purposes; and is required by various material specifications and for the calculation of optical absorptivity. 4.2 Test Method D4218 is available for determining the carbon black content of polyethylene compounds if so desired.